Nokia Corporation

Other

Nokia Technologies Oy

Nokia Mobile Phones Limited

Visa Tapio Smolander

Juha Johannes Salokannel

Mika Kasslin

Antti Lappeteläinen

Antti Lappetel&auml;inen

Arto Tapio Palin

Jukka Pekka Reunamäki

Fujio Watanabe

Heikki Huomo

Aarno Tapio Pärssinen

Mauri Honkanen

Petteri Alinikula

Pertti Juhani Huuskonen

Jarno Leinonen

Ari V&auml;is&auml;nen

Apparatus, and an associated method, by which to facilitate frequency channel allocation, and reallocation, in a radio communication system. Channel allocation and reallocation is effectuated to attain a desired statistical emission spectrum. Implementation is effectuated, for instance, in a WLAN system operable pursuant to the IEEE 802.11 standard but implemented in a 5 GHz frequency band.

Assembly, and associated method, for facilitating frequency allocations in a radio communication system to attain statistical spreading of electromagnetic energy

The present invention relates to a communication system comprising devices () having means for short range communication using a certain frequency band. The frequency band is divided into communication channels. In the communication system some of said communication channels are predefined for establishment of the connection and other communication channels are predefined for data transfer between at least two devices. The present invention also relates to a communication device for communication in a communication system, the device having means for short range communication using a certain frequency band, which is divided into communication channels. The present invention further relates to a method for performing communication in a communication system comprising devices, which have means for short range communication using a certain frequency band, which is divided into communication channels.

Communication system, a communication device and a method for performing communication

An assembly, and an associated method, for facilitating effectuation of a transmission power control scheme in a radio communication system, such as that defined in the IEEE 802.11 standard. Separate power schemes are defined in point control function operation and distributed control function operation of the communication system. Signaling is provided between network infrastructure and mobile stations to instruct the mobile stations to generate communication signals of selected power levels.

Assembly, and associated method, for facilitating control over power levels of communication signals in a radio communication system

Assembly, and associated method, for facilitating frequency allocations in a radio communications system to attain statistical spreading of electromagnetic energy

The invention relates to a method in a wireless communication system ( ) comprising wireless terminals (MT -MT ), a communication channel (CH) and at, least one access point (AP , AP ) and access point controller (AC , AC ). The method comprises the steps of activating at least one data transmission connection between the wireless terminal (MT -MT ) and the access point (AP ), in which information is transmitted in packets, forming data frames (FR) for the transmission of the packets, supplementing said data frame (FR) with at least one item of error checking data, in whose formation at least a part of the information contained in the data frame (FR) is used, converting said data frames (FR) into signals to be transmitted on the communication channel, receiving signals transmitted on the communication channel and converting them into data frames, forming reference.data corresponding to at least one item of error checking data on the basis of the information received in the data frame (FR), comparing the received error checking data with said reference data, and setting up an acknowledgement message, in which information on the received parts of the data frame (FR) is transmitted from the device (MT -MT ) receiving the data frames to the device (AP , AP ).

Method for forming acknowledgement data in a wireless communication system and a wireless communication system

The invention relates to a method in a wireless data transmission system ( ) which comprises wireless terminals (MT -MT ), at least a first access point (AP ) and a first access point controller (AC ), a second access point (AP ) and a second access point controller (AC ). In the data transmission, data frames are used. In the invention, two allocation strategies are defined of which two are selected at a time. From the data frames, a first starting point (TS , TS ) and a second starting point (TS , TS ) are determined. In order to select a strategy, it is examined whether there is other traffic on the channel. If other traffic can be detected, it is examined which allocation strategy is selected, and an allocation strategy which is different from that of the examined connection is selected for the connection to be set up. However, if traffic is not detected, it is possible to select the allocation strategy freely. In the first allocation strategy, the allocation of the time slots of the data field (D , D ) is started from the first starting point (TS , TS ) of the data field, and in the second allocation strategy, the allocation of the time slots of the data field is started from the second starting point (TS , TS ) of the data field.

Efficient bandwidth allocation for high speed wireless data transmission system

The invention relates to a method in a wireless communication system ( ) which includes wireless terminals (MT -MT ) and at least one access point (AP , AP ) and access point controller (APC , APC ). At least one antenna configuration is determined for an antenna ( ) of the wireless terminal (MT -MT ). In the method, the antenna ( ) of the wireless terminal (MT -MT ) is used for receiving a radio signal and the strength of the radio signal received by the antenna ( ) of the wireless terminal (MT -MT ) is measured. A measurement message (HD , D ) is formed of one or more measurements, which is transmitted from the wireless terminal (MT -MT ) to the access point (AP , AP ). Further in the method, data (UAC) about the antenna configuration during the measurement is added into the measurement message (HD , D ).

Method for transmitting measurement data in a wireless communication system and a wireless communication system

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Helsinki, Finland

Visa Tapio Smolander